<template>
    <div>
       <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图 -->
        <el-card>
            <div id="main" style="width:900px;height:480px;"></div>
        </el-card>
    
    </div>
</template>

<script>
// 导入echarts
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
    data(){
        return{
            options:{
                title:{
                    text:'用户来源'
                },
                tooltip:{
                    trigger : 'axis',
                    axisPointer:{
                        type:'cross',
                        label:{
                            backgroundColor :'#E9EEF3'
                        }
                    }
                },
                grid:{
                    left:'3%',
                    right:'4%',
                    bottom:'3%',
                    containLabel:true
                },
                xAxis:[
                    {
                        boundaryGap: false
                    }
                ],
                yAxis:[
                    {
                        type:'value'
                    }
                ]
            }

        }

    },
    created(){

    },
   async mounted(){
        //此时页面上的元素已经渲染完毕
 var myChart = echarts.init(document.getElementById('main'))

 const {data:res}= await this.$http.get(`reports/type/1`)
 if(res.meta.status !==200 ){
     return this.$message.error('获取折线图数据失败！')
 }

    //  准备数据配置 数据合并
    const result = _.merge(res.data,this.options)

    // 展示函数3
    myChart.setOption(result)

    },

    methods:{

    }
}
</script>
<style lang="less" scoped>

</style>